Deprecate taint/trust and related methods, and make the methods no-ops

This removes the related tests, and puts the related specs behind
version guards.  This affects all code in lib, including some
libraries that may want to support older versions of Ruby.

1 files changed, 3 insertions, 14 deletions

diff --git a/error.c b/error.c
index 6ce49e0aa2..0859036615 100644
--- a/error.c
+++ b/error.c
@@ -2018,7 +2018,6 @@ syserr_initialize(int argc, VALUE *argv, VALUE self)
 
 	if (!NIL_P(func)) rb_str_catf(errmsg, " @ %"PRIsVALUE, func);
 	rb_str_catf(errmsg, " - %"PRIsVALUE, str);
-	OBJ_INFECT(errmsg, mesg);
     }
     mesg = errmsg;
 
@@ -2319,19 +2318,7 @@ syserr_eqq(VALUE self, VALUE exc)
 /*
  *  Document-class: SecurityError
  *
- *  Raised when attempting a potential unsafe operation, typically when
- *  the $SAFE level is raised above 0.
- *
- *     foo = "bar"
- *     proc = Proc.new do
- *       $SAFE = 3
- *       foo.untaint
- *     end
- *     proc.call
- *
- *  <em>raises the exception:</em>
- *
- *     SecurityError: Insecure: Insecure operation `untaint' at level 3
+ *  No longer used by internal code.
  */
 
 /*
@@ -2971,12 +2958,14 @@ rb_check_frozen(VALUE obj)
 void
 rb_error_untrusted(VALUE obj)
 {
+    rb_warning("rb_error_untrusted is deprecated and will be removed in Ruby 3.2.");
 }
 
 #undef rb_check_trusted
 void
 rb_check_trusted(VALUE obj)
 {
+    rb_warning("rb_check_trusted is deprecated and will be removed in Ruby 3.2.");
 }
 
 void